Differential marking of grammatical relations has been the topic of a number of investigations. However, rather few large-scale, comprehensive studies of the historical development of the differential case-marking strategies have been carried out yet (an important exception is, for instance, Bickel et al., to appear).

The aim of the present workshop is to gather insights on the multi-factorial mechanisms leading to the rise of the differential argument marking, more specifically, to the Differential Subject- (DSM) and the Differential Object Marking (DOM).